Table 4– Carbon monoxide-verified continuous abstinence rates from week 2 to weeks 4, 6, 8, 12, 16, 20, 24 and 52
Time pointNicotine mouth spray#Placebop-value+Risk ratio (95% CI)§Odds ratio (95% CI)§
Week 4101 (31.8)35 (21.7)0.0221.46 (1.05–2.04)1.68 (1.08–2.61)
Week 683 (26.1)26 (16.1)0.0141.62 (1.09–2.41)1.83 (1.13–2.99)
Week 878 (24.5)23 (14.3)0.0091.72 (1.12–2.63)1.95 (1.17–3.25)
Week1264 (20.1)21 (13.0)0.0551.54 (0.98–2.43)1.68 (0.98–2.87)
Week 1657 (17.9)15 (9.3)0.0131.92 (1.13–3.29)2.13 (1.16–3.89)
Week 2053 (16.7)11 (6.8)0.0032.44 (1.31–4.54)2.73 (1.38–5.38)
Week 2450 (15.7)11 (6.8)0.0062.30 (1.23–4.30)2.54 (1.29–5.04)
Week 5244 (13.8)9 (5.6)0.0072.48 (1.24–4.94)2.71 (1.29–5.71)
  • Values are presented as n (%), unless otherwise stated. #: n=318;: n=161; +: p-values were calculated using the Chi-squared test; §: estimated risk ratios/odds ratios and corresponding 95% confidence intervals were calculated using Mantel–Haenszel statistics.